This study is part of a larger effort to study dismounted soldiers and their use of technology. Here we examined the utility of display devices displaying global positioning information and navigation map for dismounted soldiers in urban route waypoint to waypoint navigation. Two field experiments were conducted. In the first, eight soldiers, with similar skills participated. Each soldier had to navigate through a predefined route, on his own, using one display devices at a time, while communicating with the command post. In the second experiment, 4 additional soldiers performed similar tasks twice, with and without time constraints. In both experiments, soldiers completed the task successfully, and no significant differences in performance accuracy or in mission duration due to display device were found. With regard to usability, efficiency, and convenience, there was a subjective preference for the use of the smaller hand held devices. Thus, those are recommended for this type of navigation missions.